Steam-trap



' (No Model.) 2 Sheets-Sheet 1.

H. EDSON 81; A. TARBY.

. STEAM TRAP.

No. 600,279. Patented Mar. 8,1898.

UNl'lED STATES PATENT OFFICE.

HUBERT EDSON AND ARTHUR TARBY, OF PATTERSON, LOUISIANA.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 600,279, dated March 8,1898. Application filed July 2, 1897. Serial No. 643,267. (No model.)

To all whom, it may concern.-

Be it known that we, HUBERT EDSON and State of Louisiana, have inventedcertain new and useful Improvements in Steam-Traps, of which thefollowing is a specification.

This invention relates to certain new and useful improvements insteam-traps adapted more particularly for use in steam and hotwatersystems; and it is the object of the invention to provide a simple andefficient steam-trap which shall be automatic and certain in itsoperation and one which is not liable to get out of order.

\Vith this object in view the invention consists in the construction andarrangement of the parts hereinafter more fully described.

In the accompanying drawings, forming a part of this specification andin which like letters and figures of reference indicate correspondingparts, Figure 1 is a vertical sectional view of the invention, and Fig.2 is a similar view on the line w 00 of Fig. 1.

Briefly stated, the invention consists of a receiver provided with asupply-pipe through which steam and water of condensation are suppliedto the receiver and with a valvecontrolled discharge-pipe leading fromthe receiver to a boiler to which the hot water of condensation is to beconducted. The receiver is normally held suspended by means.

of an overbalance-weight or equivalent device, and the valve of thedischarge-pipe is maintained in its closed position. The receiveris,however, capable of an up-and-down movement relative to thedischarge-pipe to open and close the discharge-valve.

Referring more particularly to the drawings, A designates the receiver,which is of suitable shape and capacity and is pivotally connected atits upper end by means of a link 1 to one end of a lever 2,which is inturn pivotally connected intermediate its ends to a hanger 3. At itsopposite end the lever 2 is provided with an adjustableoverbalanceweight 4 or its equivalent-as, for instance, a spring-whichweight is normally sufficiently heavy to depress one end of the lever 2and elevate the opposite end, to which the receiver is connected, andthereby raise the said receiver.

' The receiver A is provided with a waterglass 5, by means of which theheight of the I water contained therein may be ascertained,

and it is also provided with a detachable bottom or plate 6, providedwith lugs 7 and with a central opening 8, surrounding which is astuffing-box 9. Having its upper end extending through the centralopening 8 of the plate 6 and projecting into the receiverAis anopenended cylindrical casing (),and upon this casing the receiver isadapted to freely move.

WVithin the lower end of the casing G is a piston 12, surrounded by astuffing-box 13, which piston constitutes a pressure-equalizer tocompensate for the difference in area between the upper and lower endsof the receiver, and'the lower end of the piston bears upon a yoke 10,the arms of which are connected to the lugs 7 of the receiver A.

Leading from the receiver A is a dischargepipe D, which extends to aboiler or to any other desirable vessel. Preferably, though notnecessarily, this pipe projects into the receiver, as shown, and isconnected to the easing 0, through which it extends longitudinally, theexterior diameter of the dischargepipe being, however, less than theinterior diameter of the casing to permit the free inflow of steam andwater through the casing into the receiver. The discharge-pipe D isprovided at its upper end with a valve-seat, with which cooperates asuitable valve to control the outflow of water from the receiver. Asillustrated, the pipe is provided with two diverging branches 14 15,which are connected at their upper ends by means of a horizontal section16, provided in its upper and lower sides with alining ports 17 and 18,having seats for suitable controlling-valves 19 20. By thus arrangingthe discharge-ports the water is allowed to flow more freely from thereceiver than if a single port were provided, as any air or steam whichmay be combined with the water is permitted to freely escape to theupper end of the receiver. It will be obvious, however, that a singlevalve and port may be employed in some instances. The valves 19 and 20,together constituting a balance-valve, are mounted upon a vertical stem21, carried by an inverted-U-shaped support 22, which extends betweenthe branches 14: 15 of the discharge-pipe below the horizontal section16 and is in turn connected to the receiver A to move therewith, and,preferably-the: support 22 is carried upon the detachable bottom of thereceiver. One of the valves 19 is arranged within the horizontal section16 and the other beneath the said section in position to close the ports17' and 18 when the receiver is" elevated and to open said ports whenthe receiver is lowered in the slightest degree.

In operation the weight 4 is adjusted upon its lever to maintain thereceiver elevated until a predetermined amount of Water isaccombined-weight of the receiver and the water contained therein, liftsthe receiver and forces the discharge-valves to their seats to close thedischarge-pipe.

From the above it will be'apparent that a steam-trap is providedwhich-is not only simple in construction and absolutely-certain inoperation, but one in which theuse of floatvalves and delicate mechanismthat is liable to get out of order is dispensed with.

It will be'noted, moreover, that the discharge-valves and theircooperating devices are connected to a'single plate, which is madedetachable fromt-he receiver-to render all ofthe parts 4 easy of access.

It will 'be obvious that while the dischargepipe is describedas beingstationary and the valves controlling the discharge-ports as 'beingcarried upon the receiver to move there-, with the discharge pipe may besupported upon the receiver and the valves carried upon the stationarybase withoutvdeparting' from the scope of the invention, and it willalso be obvious that the inlet and discharge pipes may enter thereceiver through the top thereof as well as through the bottom, asshown.

Without limiting ourselves to the precise construction and arrangementof parts shown,

-we claim as our invention- 1. In a steam-trap, the combination of avertically-movable receiver provided with an inlet, a stationarydischarge-pipe extending into the receiver and having a horizontalportion at its upper end provided with a port,

and a valve carried upon the receiver and adapted to'control the port ofthe dischargepipe, substantially as described.

2. In a steam-trap, the combination'of a vertically-movable receiverprovided'with an inlet and with a detachable plate, a "station- 'ary"discharge pipe extending into thereceiver; said? pipe being providedwith a port, and a valve connected to thedetachable plate and adaptedltocontrol the' port of the'discharge-pipe, substantially as described.

. 3.'-In a steam-trap, the combination :of a vertically-movable receiverprovided in its bottomwith an inlet, having a pressure-equal- -izer, anda valve-controlled discharge-pipe leading from the receiver,substantially as described.

4. In a steam-trap, the combination with a vertically-movable receiver,of a stationary cylindricalcasing extending into the receiver,

an inlet-pipe communicating with the'casin g,

-astationary discharge-pipe likewise extending into the receiver, and avalve operated by the movement of the'receiver to control thepassage ofsaid pipe, substantially as-described.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing witnesses.

HUBERT EDSON. ARTHUR TARBY.

Witnesses:

' L. WV. HEINS,

HENRY PETERSON.

